Installation of the Voltmeters

TASK 24-37-21-400-001-A
Installation of the Voltmeters

ZONE: 210
FIN: 3PV1
FIN: 3PV2

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	ELECTRICAL CONTACTS INSERTION TOOL

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
822

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
Voltmeters of Batteries

3. Job Set-up
Subtask 24-37-21-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the avionics compartment door 822.
(3) Make sure that the access door 822 is open.
(4) Make sure that the access panel of the BATTERY power center 105VU is opened.

Subtask 24-37-21-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 3PV1 (VOLTMETERBAT 1)
105VU	ELEC/BAT REF/BCL1	9PB1	F01
FOR FIN: 3PV2 (VOLTMETERBAT 2)
105VU	ELEC/BAT REF/BCL2	9PB2	F02

4. Procedure
Subtask 24-37-21-420-050-A

A. Installation of the Voltmeter

CAUTION: REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

(1) Put the voltmeter (1) in position.
(2) Install the two screws (4) and tighten them.
(3) Connect the electrical wires (5) to the voltmeter (1) with the ELECTRICAL CONTACTS INSERTION TOOL.
(4) Install the panel 35VU (2) in its housing.
(5) Turn the four quick-release fasteners (3) by a quarter turn.
(6) Install the plate 13LF (6) on the panel 35VU.
(7) Install the 5 screws (7) and tighten them.

Subtask 24-37-21-865-052-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 3PV1 (VOLTMETERBAT 1)
105VU	ELEC/BAT REF/BCL1	9PB1	F01
FOR FIN: 3PV2 (VOLTMETERBAT 2)
105VU	ELEC/BAT REF/BCL2	9PB2	F02

Subtask 24-37-21-710-050-A

C. Check of the Battery Voltage
(1) Make sure that the battery voltage comes into view.

5. Close-up
Subtask 24-37-21-862-050-A

A. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

Subtask 24-37-21-410-050-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access panel of the BATTERY power center 105VU.
(3) Close the access door 822.
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:23:44 UTC